Hoisting mechanism



Feb. 10, 1931. E. G. GAR-HN 1,791,894

HOISTING MEGHANISM v Original Filed Deo. l5, 1920 3 Sheets-Sheet l lyeg. j.

Feb. 10, 1931. E, G. GAR-11N 1,791,894

' HoIsTING MECHANISM Original Filed Dec. 13, 1920 I5 Sheets-Sheet 2 Feb. 10, 1931. E. G. GARTI'N HOISTING MECHANISM Original Filed Dec. 13, 1920 5 Sheets-Sheet 3 taken on the line 4-4of Fig.' 2.

a may be resorted to if desired.

PatentedV eb. 10,` l, .Y

-- oiaiimuqay COMPANY, e-"oonronemron or 'MAssAoiiUsE'rTs HQXSTING MECHANISM Appncanmriea December. langes, .serial Ne. 430,215. flaeiiewea December as, 19,29.

My invention relates to hoisting mechaf nisms. Y I, .g y Une yof its objects istoprovide anim# proved hoisting mechanism. Another object z of' my invention is4 to Vproyide an improved hoisting mechanisinVV having improved conf-- trollingniechanism. A'fiiither obj ect1 invention is to provide animproved h )isftin"gl mechanism of thefair driven typehaving im-V proved mechanismvfor controlling "theI air driving means and its relationtotheV hoisting mechanism.Y Qther-objectsand. advantages of my improved construction will apT pear in the course ofthe' ilollowingspecification and appended claiinslf, y Y

In the accompanying drawings I have shown for purposesl of illustratioijiv one `formV which invention may assume in practice,

togetherjwith certain modifications -whicli In thesedrawngs, l y y y. Fig. l is a'view partially in side elevation rand' partially with the shell. of the drum broken away to disclose details of the interior mechanism of my improved hoistingv mechanism. 1 Fig. 2 is a central longitudinal vertical section through the axis of my improved hoisting mechanism.

Fig. 3 is a transverse sectie*T on` the line A g at opposite ends of the casing. As shown, 4this ca-sing houses a plurality of sets of rotors,

3-3 oiC Fig. l2. Fig. 4 is a transverse section *throughl the drum of iny improvedfhoisting mechanismy v Y gear .and carrying with it theother vset of Fig. 5 is a'section takenl on the line ,5f-.5 Griega. f

partially insection on the line G-VGVFig. 4.

Fig. 2. y. f y Y Y Fig. 9 is a transverse vsection taken onl the line 9-9 of Fig. 5.

Fig. l0 is a similar'section taken on theV line 10-10 of Fig. 5, showing Athe arrange#A ment of air passages. f

Fig. 1l is a transverse section on the line 11-11V of Fig. 2 through thefcontrolling Y v l y y y v y l f Y Y j teeth thanthe gearll andsnugly house'din valve.

.Figsf12 VAand '1S-are fragmentary sections y y l e. Gamin, or eLAiaEivroivm; NewH AMPsH1.1m, 'AssIenoR 'ro sULL'ivAN MA- rotatable about acentralshaftf','which r'eig-1 tends longitudinallyof the drum with respect to which the drum islrotatable, .this Shaft beine non'roatablv Supported in Suitable mountingsli and the parts being held in A assembled relation by a clamping bolt 5, threaded into vone end of. the shaft` '3,V and the" bearings 2'and' supportsV i beingcarried by suitable arnisj7`gformed'-on kany suitable supp'ort, herein in-theform oft`V a trunnion adapted to be adjustably mounted and clamped on a bar or otherwise in the Same Y general manner as ardrill.v

Disposed in the drum l and: positively cori-V nec'ted thereto in a suitable manner is a hoistl driving motor which in` its general aspects resembles that. constituting the invention of one George H. Gilman and, oimingthe sub1 .ject matter of application Ser. No.' 332,519,

liled October v22, 1919. i A'This motor is en.- closedV withina suitable casing 9 `V arranged QOaXia-lly with the shaft 3 and rotatable rel-V ative thereto on suitable bearings l10 disposed one set being-rotatable about a normally fixedy A rotors which themselves rotate, at a mate- .rhlly. diffe-rent (herein reduced) speed, and Fig. 6`is a View partially in elevation and a; rotatablefgear ixedly connected to .the drum, the construction being such that each set of lrotorscooperates with the other not vonly in the rot'atioi'i of the `drinnI but in profducing the `speed reduction desired.

Referringjinore particularlyl tothe'drawings, Figs. 2,and 4, it will beIlDted that a` gear 11 is'fixed to one enel, her-ein 'the leftV hand end (Fig-2)A of the drum vl and that this gearjis rotatable, accordingly, with respect to lthe hollow shaft 3. Disposed radiallyabout this gear l1V are a plurality-of` smaller gea-,PS 0r rotors 13 having a Smaller numbeef ist@ suitable bosses 12 on the casing 9. These rotors 13 are herein each suitably splined as at 14 to suitable shafts 15 disposed longitudinally of the casing and journaled therein in suitable bearings 16 at the opposite ends of the casing. Attention is herein directed to t-he fact that the shafts 15 are provided at points substantially midway between their ends with spacing flanges 17 and that they carry, on the opposite sides of the flanges 17 from the rotors 13, another set of rotors 18, having a different number of teeth from that of gears 13, and similarly splined to the shafts. These gears 18 in turn mesh with a gear 20 having a larger number of teeth than the gears 13 and 18 and journaled upon the shaft 3 as at 21, this gear being provided with aradially extending annular flange 22whose end surface upon the side away from the casing 9 is recessed and forms a housing having a perforated plate 23 carrying a plurality of cork inserts 24 whose purpose will hereinafter be explained.

From the foregoing description, it will be readily understood that when suitable means is provided for effecting rotation of the gears 13 and 18 with respect to the gea-rs 11 and 20, if the gear 2O be held stationary, the result will be rotation of the drum, but that if the gear 20 be free to rotate, by reason of the load upon the drum there will be no rotation of the drum, but instead the gear 20 will rotate freely with respect to the shaft 3. For the purpose of maintaining the gear 20 stationary when desired, I have arranged coaxially on the shaft 3 a sliding` sleeve 25 provided with a radially extending flange 26 adapted to engage the cork inserts 24 and to force them into tight enga-gement with the flange 22. It will be understood that the member 25 is keyed as indicated at 27 to the periphery of the shaft 3 whereby its rotation is prevented. To move the member 25 longitudinally I have formed in a sleeve 28 projecting toward the right in Fig. 2 a series of threads 29 cooperating with a threaded sleeve 30, which is formed at its outer end with a spur gear 31 adapted to be engaged by a second spur gear 32, which latter is secured upon a shaft 33 journaled in the arm 7 and rotatable by a crank 34. Rotation of the crank 34 will obviously effect rotation of the gears 32 and 31 and by the interact-ion of the threaded sleeve 30 and thread 29 upon the sleeve 28,- will cause movement in opposite directions, depending upon the direction of rotation of the handle 34, of the clutch applying member 25. It will be understood that the sleeve 30 is prevented from longitudinal movement by suitable means, herein by means of a shoulder 35 formed thereon. The annular flange 26 is provided with a suitable series of inserts of friction material 37 upon its side opposite the member 22 and these are adapted to engage the end plate 38 of the drum 1 upon movement of the member 26 toward the right in Fig. 2, and by reason of the fact that at that moment the gear 20 is no longer positively held, the motor is unable to exert any torque upon the drum 1 and accordingly the engagement of the frictional materia-l 37 carried by a stationary flange 26 with the rotating end 38 of the drum acts to retard rotation of the drum and serves as a brake.

The supply of motive fluid to the rotors to effect their rotation will next be considered. It will be noted that pressure fluid, at times carrying with it lubricant, is supplied to the rotors from a suitable line 40 through a throttle valve 41. This valve 41 is controlled by a usual controlling handle 42 and herein has a central chamber 43 adapted to supply motive fluid from the line alternatively to either of a plurality of spaced ports 44 and 45 from which the fluid is distributed by means now to be described, to effect rotation of the rotors in opposite directions, the port 44 or 45 which is not being used as an inlet being used as an exhaust for a portion of the used motive fluid and being adapted to be connected by grooves 46 or 47 to ports 48 or 49 communicating with the common exhaust passage 50. The passages 44 and 45 extend longitudinally through the shaft 3 and communicate respectively with annular grooves 52 and 53 spaced longitudinally of the shaft 3 and formed in the periphery thereof. Communicating with these annular grooves are series of radially extending passages 54 and 55 extending through the member carryingl the gear 11 and these passages communicate respectively with annular grooves 56 and 57 formed in the left hand end of the rotor casing (Fig. 2). From these grooves 56 and 57 there extend respectively passages 58 and 59 which open by suitable series of ports 6() and 61 into the rotor housing at points adjacent the mesh lines of the teeth of the spur gears 11 and 13 and 18 and 20. It will accordingly be understood that when the valve 41 is adjusted to supply motive fluid to the passageway 44 and to connect the passage 45 to the exhaust, relative rotation of the gearing will take place in one direction and will effect rotation of the drum 1 in one direction, if the gear 2() be held stationary, whereas7 a reversal of the position of the valve 41 will effect a reverse rotation of the drum 1. For the purpose of taking care of the exhaust not discharged through ports 44 or 45, i. e. the fluid trapped in the tooth pockets of ro* tors 13 and 18, I provide exhaust -ports 62 formed in the bosses 12 on the wall of the housing 9 and opening into the interior of the same, and the exhaust fluid from these ports passes freely from the drum by ports 62. It will be noted that ports 62 communicate with the tooth pockets at about the same relative time irrespective of the direction of rotation of the rotors 13 and 18.

llO

ifzreigesaau which .is adapted to communicate in a neutral n i, i rf position of the `valve with aE pocket .formed ,thereinandthis pocket 'Z0V is adapted when the valveis tu'rnedto its opposite, positions for effecting opposite rotations of the? hoist drum, to communicate with passages68 and 69 which lead downwardY and communicate with the chamber in which Vthe* valve 41 is disposed below the end of said'valve. order to permit the venting of the oil reservoir SSI drillfavent port ,7l through the valve in such manner that-when iheyvalveis,.in neutral position,ftliis vent port, which its lower end communicates with the groove 70,

is connected with a port 72 opening intoA the upper end of the paSsageGl. `By reason. of

this connection it is possible to effectively permit the escape of air `from the. chamber 63. TheV arrangement of the ports in the valve il is such that when fluid is supplied to the port ,44 the port LiliF is connected bya grooveV l? extending somewhat more than 180 degrees in the peripheryofthevvalve. .with the exhaust port i9 and that when fluid is supplied to thepassage 45, a similar groove f6 connects the ports Mandrad.

From the foregoingV description, the Inode,

of' operation of this formo'f'my .hoisting il; mechanism will be, itis thought, readily apparent to those skilled inthek art. It willbe readily understood that it is 1 not essential that the gear` 1l be secured to tli'efdruml and that the gear -be the one which by itslocking toa stationary part, effects rotation of the drum, but instead the gear 2O may berigidly secured to the `drum and the gear Il provided with means 'for alternativelypermitting its free rotation or positive locking to check or effect rotation of the drum. In Figa-12 I have shown a" differentmeans for locking the controlling gear, herein-indicated by 1I and employ forthis purpose a multiple disc clutch 74 arranged between aA flange 75 5- Secured to the gear l1 and aclutchapplying, sleeve 76 which is provided at itsperiphery with a worm Wheel 77. andwhich is arranged" in threaded engagement with the shaft 3; as indicated at V7.8. It will be noted. that alternate .disks are respectively held toV the shaft 3 and the flange 7,5; vA. worm\79 operated by a handle 8() is journaled in the supporting arm member 'Zand operates upon movement of the Vwormin.opposite directions by interaction of thethrea'ds ,7,8 to apply and releaej the multiple disc clutch-in such man-1V ner as to gear ll.

permit rotation of ortoV lock the It will be also evidentthat as shown'infFig` ,1 13, Imayvuse an ordinary;bandbrakehcomplising a brake applying band,l 82 lined -lW-ith fretrllal materal Cooperating-with aflangeStfoI-med upon an extension of :the

gear 1-15 l to effect l locking (and release vof the vvgearf llJandto'ap-plyfthisf brake band I use a-transverse reversely threaded bolt 85 cooperating with nuts SGsecuredto the 'ends of` tlre'band 82and by rotation ofahandle 87 connected to the brake-.. Y c i While I havein this application specifically described certainv forms which my invention may assume in practice, it will be understood that these-forms of'thef same are' shown for purposes o-f illustration andthatthe inbolt 85, apply or release the vention mayl be modified and embodied-in other, formswithout departing from .its spirit or the scope of the appended claims.

WWhat I claimas new anddesireto secure;

by Letters Patent is: v i Y i V1. vIn a hoist, a drum, driving meansY therefor Y comprising a plurality of intermeshing gears one'o-f which is inv fixed relation to said drum andanother of which whenlocledor unlocked isad'aptedto control movement .of

said drum,A and `means forsupplying fluidto 'f the teeth of said gearsadjacent their points-v ofmeshfA toefl'ectrelative rotation thereof.-

2. In ai hoisting mechanism, a4 drum,1driv ing? meanstherefor comprising. a. stationary.`

shaft, a pair of gears rotatable relative to said sha-ft, gearing cooperating` withsaid rst mentioned gearing, means'for supplying pressure' fluid: to all? of saidl gearing-adj acent'` the-lines of meshvof itsconstituent parts comprising passages extending laterally of said shaft, and meansfor. locking at will one of said first mentioned gears relative to said Shadi-@fthe other of said first mentioned gea-rsA being non-rotatively connected with the drum. Y y l' V 3. In a hoisting mechanism, a drum, a` shaft, fixed and rotatable central gears thereon, one of, said vgears being lixedly connected toisaid drum,V planet gears meshing with said central gears,- meansVV for supplying4 pressure fluid axially of said shaft and' central gears and longitudinally to; a plurality of points along either side'ofthe-line fof mesh of eachv centralJ and planet gear,fand meansv for re- Vleasingsaid-'fixed gear for rotation at will drum whereby relative rotation-therebetween isf prevented, and meansfor holding the other thereoflstationary or permitting' it to rotate iic about its own axis at will, said last mentioned means being movable to effect braking of said drum.

5. In a hoist, a drum, a motor includinor a housing disposed therein and rotatable re ative thereto, a plurality of coaxial gears mounted in said housing and rotatable on running of said motor and adapted to rotate about an axis parallel to the axis of said drum but spaced therefrom, said axis traversing an orbit as said drum is winding and while fully operative, a member carrying a gear with which one of said rst mentioned gears is adapted to mesh during rotation of said drum, means associated with the remainder of said first mentioned gears to drive said drum, means for operatively supporting all of the above mentioned elements, and means for locking or releasing said member at will.

6. In a hoisting mechanism, a drum, a motor within said drum comprising means providing a plurality of rotor chambers having rotors therein, said rotors rotating on their own axes Vand said chamber providing means rotating on the same axis as the drum while the drum is rotating during winding, and means comprising a manually controllable gear and a gear meshing therewith and traversing an orbit as said drum rotates for causing said drum to rotate or remain stationary.

7. In a hoist, a drum, and driving means therefor including a pressure fluid' motor comprising a housing having disposed therein gearing each element of which acts both as a power generating motor rotor and a reduction gear element, and pressure fluid sup# ply and exhaust means therefor, one element of said gearing having a portion within and operatively connected to said drum, and means for locking or releasing another element of said gearing.

8. In a hoisting mechanism, driving means for a drum including a motor comprising a housing having disposed therein gearing each element of which acts both as a power generating motor rotor and a reduction gear element, one element of said gearing being directly non-rotatably connected to the drum, motive iuid supply and exhaust connections therefor arranged `coaxially thereof, and means for controlling said gearing comprising means for locking or releasingone element thereof.

9. A hoisting mechanism comprising a winding drum and a motor disposed about a common axis, said drum being supported for rotation but fixed against axial movement, and means disposed within said drum and including an element movable along said axis to bring said motor and drum in relation so as to rotate the latter by said motor, or to terminate said relation.

10. A hoisting mechanism comprising a f' winding drum and a motor having a common axis, means including an element movable along said axis to connect said drum and motor in relation so as to rotate the drum by the motor, said element being immovable during said connection and rotatable actuating means for said element.

11. A hoisting mechanism comprising a winding drum and a-motor having a common axis, means having a portion thereof disposed within said drum including an element movable along said axis to connect said drum and motor in relation so as to rotate the drum by said motor, and actuating means for said element having members movable in opposite directions.

12. A hoisting "mechanism comprising a winding drum, a shaft extending therethrough and substantially concentric to sald drum, a motor having a power driven element, means whereby said drum may be driven by said power driven element including power control mechanism disposed within said drum and carried by said shaft whereby said motor may be connected in relation to said Vdrum so as to rotate the drum by said motor, and means for controlling said power control mechanism from the exterior of said drum.

13. A hoist comprising a winding drum, a power driven element, and means whereby said drum may be driven by said power driven element including releasable power control mechanism having a portion disposed within said drum and immovable when the same is operative to effect drum drive.

14. A hoist comprising a winding drum, a motor having a power driven element, and means whereby said drum may be driven by said element including power control mechanism disposed within said drum for connecting said 4drum and power driven element in relation so as to rotate the drum by said motor, said power control mechanism having a member movable when said power control mechanism is inoperative to effect drum drive and stationary during drum driving.

15. A hoisting mechanism comprising a winding drum, means whereby the same may be driven including power transmitting control mechanism disposed therein, and means for operating said control mechanism from the exterior of the drum.

16. A hoist comprising a winding drum, and means whereby the Isame may be driven and controlled including a brake having a portion disposed within said drum and immovable when the drum is winding.

1T. A hoist comprising a winding drum, and means whereby the same maybe driven including a brake dispose-d within said drum and an element movable when inoperative to effect drum drive.

18. A hoisting mechanism comprising a winding drum, means whereby the same may be driven including a brake disposed therein, and meansfor operating the same from the exterior of the drum.

19. The combinati-on set forth in claim 6` further characterized in that said manually controllable gear has controlling means in-Y cluding ricti'onal controllin means.

20. The combination set orth in claim 6 further characterized in that the manually controllable gear is provided with means for releasably hol-ding the same against rotation.

21. In a hoi-sting mechanism, a drum, and driving means therefor including intermeshing rotors whose'axes lie in a common plane,

supporting means for said, rotors providing -for rotation of one of the same orbitally about the other and rotation of the latterv upon a fixed axis, means for supplying fluidselectively to said rotors at either side of a plane, including their axes and adjacent the mesh line between therotors to eiect Voperation of the motor in opposite directions and for conducting away'exhaust motive Huid when the motor is running in either direction, means for selectively holding or releasingthe rotor which is supported for rotation on a fixed axis, and means including a gear coaxial with the drum and a gear mesh` ing with said last mentioned gear and rotatable coaxially with said -orbitally rotating i rotor for drivingvthe drum.

22. A hoist comprising a winding drum, and means whereby the same may be driven or braked including an element within said v drum movable in opposite directions to effect drumldrive and'to brake ldrum rotation.

VIn testimony whereof I ax my signature.

ELMER G. GARTIN. 

